EPC is a generic flag, Electronic Power Control. Lots of stuff under that umbrella. What's your actual codes from a Audi knowledgeable scan tool?

 

2007 is also going to be a B7 product, so you might want to go to that forum once you have actual codes, as the engines and related systems are different enough from here in B8 land.

 

 

Whole text from the scan. I don't know what those numbers are, and why would I use my time looking them up when you already have the complete text? Also, it will clarify if that's actually a B7 car and not a B8 car (this being the B8 forum).

 

Sorry for the inconvenience below is the scan results
012555 - Low Pressure Fuel regulation
P310B - 002 - Fuel Pressure Outside Specification
Freeze Frame:
Fault Status: 01100010
Fault Priority: 0
Fault Frequency: 22
Reset counter: 255
Mileage: 172242 km
Time Indication: 0

Freeze Frame:
RPM: 1283 /min
Load: 37.2 %
Speed: 0.0 km/h
Temperature: 13.0°C
Temperature: 15.0°C
Absolute Pres.: 830.0 mbar
Voltage: 14.351 V

001092 - EVAP Purge Control Valve (N80)
P0444 - 004 - Circuit Open - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 0
Fault Frequency: 9
Reset counter: 255
Mileage: 172253 km
Time Indication: 0

Freeze Frame:
RPM: 186 /min
Load: 58.4 %
Speed: 0.0 km/h
Temperature: 36.0°C
Temperature: 45.0°C
Absolute Pres.: 840.0 mbar
Voltage: 11.049 V

000051 - Turbocharger Bypass Valve Control Circuit
P0033 - 004 - Malfunction / Open Circuit - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 0
Fault Frequency: 9
Reset counter: 255
Mileage: 172253 km
Time Indication: 0

Freeze Frame:
RPM: 186 /min
Load: 58.4 %
Speed: 0.0 km/h
Temperature: 36.0°C
Temperature: 45.0°C
Absolute Pres.: 840.0 mbar
Voltage: 10.668 V

000579 - Solenoid Valve for Boost Pressure Control (N75)
P0243 - 004 - Malfunction - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 0
Fault Frequency: 9
Reset counter: 255
Mileage: 172253 km
Time Indication: 0

Freeze Frame:
RPM: 172 /min
Load: 64.7 %
Speed: 0.0 km/h
Temperature: 20.0°C
Temperature: 22.0°C
Absolute Pres.: 830.0 mbar
Voltage: 10.414 V

000135 - Fuel Rail/System Pressure
P0087 - 002 - Too Low - Intermittent
Freeze Frame:
Fault Status: 00100010
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 172310 km
Time Indication: 0

Freeze Frame:
RPM: 460 /min
Load: 33.7 %
Speed: 4.0 km/h
Temperature: 99.0°C
Temperature: 42.0°C
Absolute Pres.: 830.0 mbar
Voltage: 12.319 V

001796 - Clutch Switch (F36)
P0704 - 004 - Implausible Signal
Freeze Frame:
Fault Status: 01100100
Fault Priority: 0
Fault Frequency: 1
Reset counter: 255
Mileage: 172328 km
Time Indication: 0

Freeze Frame:
RPM: 2923 /min
Load: 11.8 %
Speed: 113.0 km/h
Temperature: 96.0°C
Temperature: 31.0°C
Absolute Pres.: 840.0 mbar
Voltage: 13.716 V

008852 - Fuel Pressure Regulator Valve (N276)
P2294 - 004 - Open Circuit - Intermittent
Freeze Frame:
Fault Status: 00100100
Fault Priority: 0
Fault Frequency: 5
Reset counter: 255
Mileage: 172362 km
Time Indication: 0

Freeze Frame:
RPM: 181 /min
Load: 64.7 %
Speed: 0.0 km/h
Temperature: 20.0°C
Temperature: 22.0°C
Absolute Pres.: 830.0 mbar
Voltage: 10.541 V

Readiness: 0000 0000

-------------------------------------------------------------------------------
Address 03: ABS Brakes Labels: 8E0-910-517.clb
Part No SW: 8E0 910 517 H HW: 8E0 614 517 BF
Component: ESP8 FRONT H06 0140
Revision: 00000000 Serial number: 00000000000000
Coding: 0004524
Shop #: WSC 06325 000 00000
VCID: 2C50C8FB8F0FD62230-8078

1 Fault Found:
00532 - Supply Voltage B+
000 - - - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 3
Fault Frequency: 1
Reset counter: 14
Time Indication: 0

Freeze Frame:
Hex Value: 0x0800
Hex Value: 0x1302
Hex Value: 0x0003
Hex Value: 0x027C
Hex Value: 0x0001


-------------------------------------------------------------------------------
Address 08: Auto HVAC Labels: 8E0-820-043.lbl
Part No: 8E0 820 043 BQ
Component: A4 Klimaautomat 3233
Coding: 00000
Shop #: WSC 00000
VCID: 71EE198F3BADFBCA43-5000

3 Faults Found:
01810 - Actuating Motor for Temperature Flap; Right (V159)
41-10 - Blocked or No Voltage - Intermittent
01842 - Potentiometer/Actuator for Temperature Flap; Right (G221)
30-10 - Open or Short to Plus - Intermittent
01842 - Potentiometer/Actuator for Temperature Flap; Right (G221)
29-00 - Short to Ground

-------------------------------------------------------------------------------
Address 09: Cent. Elect. Labels: 8E0-907-279-8EC.lbl
Part No: 8E0 907 279 N
Component: int. Lastmodul ECE 0907
Coding: 01001
Shop #: WSC 65536
VCID: 3D76F5BF37754FAA97-4A9C

1 Fault Found:
02071 - Local Databus
57-00 - Electric Circuit Failure

-------------------------------------------------------------------------------

 

Yeah, 8E, not 8K, so that's a B7. You should go over there, as while the FSI and TSI are similar, they have their own particular common failure problems. Looking like some electrical issue, as you're getting electrical errors on three different valves and the ABS and the HVAC, etc. May or may not be related to your fuel pressure problem, as high pressure fuel pump driving by the cam is a common problem area on the FSI. Good luck.

 

My 2015 S5 just had this problem and Google brought me directly to this thread. ESC lamp came on with a vibration when idle and a very rough acceleration. Problem went away after turning the car off and back on the next day. Took it to the dealer who checked the codes: misfire on cylinder #4. They checked the spark plug and it was fine so they replaced its ignition coil.